Information technology - Generic of coding of moving pictures and associated audio information - Part 1: Systems (ISO/IEC 13818-1:1996); English version EN ISO/IEC 13818-1:1997
Heating systems in buildings - Method for calculation of system energy requirements and system efficiencies - Part 3-3: Domestic hot water systems, generation; German version EN 15316-3-3:2007— 33 стр.